/* Modern Glassmorphism + Gradient UI */

:root {
    --bg: #0f172a;
    --card: rgba(255, 255, 255, 0.08);
    --card-border: rgba(255, 255, 255, 0.12);
    --text: #f8fafc;
    --muted: #cbd5e1;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --success: #22c55e;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    --blur: blur(18px);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    color: #e2e8f0;
}

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    min-height: 100vh;
    padding: 100px 24px 40px;
    background:
        radial-gradient(circle at top left, #1e293b, transparent 40%),
        radial-gradient(circle at bottom right, #312e81, transparent 40%),
        linear-gradient(135deg, #0f172a, #111827);
    color: var(--text);
}

/* HEADER */

header {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 1200px;
    padding: 16px 24px;
    border-radius: 20px;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow);
    z-index: 1000;
}

header h1 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #cc33ff;
}

header a {
    position: absolute;
    right: 24px;
    top: 2px;
    transform: translateY(-50%);
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: 0.3s ease;
}

header a:hover {
    opacity: 0.7;
}

/* LAYOUT */

.container {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 28px;
    max-width: 1280px;
    margin: 0 auto;
}

@media (max-width: 900px) {
    .container {
        grid-template-columns: 1fr;
    }
}

/* PANELS */

.controls,
.card,
.code-box {
    background: var(--card);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow);
}

/* CONTROLS */

.controls {
    padding: 24px;
    border-radius: 24px;
}

.control-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--muted);
}

input,
textarea,
select {
    width: 100%;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.05);
    color: var(--text);
    outline: none;
    transition: all 0.25s ease;
    font-size: 0.95rem;
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99,102,241,0.2);
}

input[type="checkbox"] {
    width: auto;
    transform: scale(1.2);
    margin-right: 10px;
    accent-color: var(--primary);
}

/* BUTTONS */

button {
    border: none;
    padding: 14px 20px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(99,102,241,0.35);
}

button:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, var(--primary-hover), #7c3aed);
    box-shadow: 0 10px 25px rgba(99,102,241,0.45);
}

/* CARD */

.card {
    width: 100%;
    max-width: 340px;
    margin: auto;
    padding: 20px;
    border-radius: 28px;
    display: grid;
    gap: 20px;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
}

.card-image-container {
    overflow: hidden;
    border-radius: 20px;
    background: rgba(255,255,255,0.05);
}

.card-image {
    width: 100%;
    display: block;
    transition: transform 0.4s ease;
}

.card:hover .card-image {
    transform: scale(1.05);
}

.card-title {
    font-size: 1.6rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.5px;
    color: #cc37ff;
}

.card-text {
    text-align: center;
    color: var(--muted);
    line-height: 1.6;
}

/* CODE SECTION */

.code-container {
    margin-top: 28px;
}

.code-box {
    position: relative;
    border-radius: 20px;
    padding: 20px;
    overflow: hidden;
}

.copy-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 8px 12px;
    border-radius: 10px;
    background: rgba(255,255,255,0.08);
    font-size: 0.8rem;
    backdrop-filter: blur(10px);
}

.copy-btn:hover {
    background: rgba(255,255,255,0.16);
}

textarea.code-display {
    width: 100%;
    height: 180px;
    padding: 18px;
    border: none;
    border-radius: 16px;
    resize: none;
    background: #020617;
    color: #e2e8f0;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}